package com.atguigu.oss.service.impl;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.atguigu.oss.service.OssService;
import com.atguigu.oss.utils.ConstantPropertiesUtils;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService {

    @Override
    public String uploadFileAvatar(MultipartFile file) {
        //获取阿里云存储相关常量
        String endpoint = ConstantPropertiesUtils.END_POINT;
        String accessKeyId = ConstantPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantPropertiesUtils.ACCESS_KEY_SECRET;
        String bucketName = ConstantPropertiesUtils.BUCKET_NAME;

        try {
            //创建OSS实例
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            //获取上传文件输入流
            InputStream inputStream = file.getInputStream();
            //获取文件名称
            String fileName = file.getOriginalFilename();

            //再文件名称里面添加随机唯一的值
            String uuid = UUID.randomUUID().toString().replaceAll("-","");
            fileName = uuid+fileName;

            //获取i当前日期
            String dataPath = new DateTime().toString("yyyy/MM/dd");

            fileName = dataPath+"/"+fileName;
            //调用oss方法实现上传
            ossClient.putObject(bucketName, fileName, inputStream);

            //关闭OSSClient。
            ossClient.shutdown();

            //把上传之后文件路径返回
            //需要把上传到阿里云oss路径手动拼接出来
            //https://edu-0205.oss-cn-beijing.aliyuncs.com/f59054a55841b80bd4fba7ab5007d4a.png
            String url = "https://"+bucketName+"."+endpoint+"/"+fileName;

            return url;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}
